I have Debian jessie installed.
kernel version:
Linux srv1 3.16-3-amd64 #1 SMP Debian 3.16.5-1 (2014-10-10) x86_64 GNU/Linux
It has 32Gb memory installed. It seems more then enough for my task. Heavy utilized asterisk process leak a lot of memory and produce a lot of troubles.
Asterisk itself and bash from time to time reports "unable to allocate memory".
At the same time based on attached top report server has 7 Gb unused memory.
It will be great if someone will help to figure out what is wrong: - what kind of resources were exhausted - what need to be tuned for 100% server resources utilization.
Top:
Tasks: 130 total, 1 running, 129 sleeping, 0 stopped, 0 zombie
%Cpu0 : 6,0 us, 1,3 sy, 0,0 ni, 21,5 id, 70,8 wa, 0,0 hi, 0,3 si, 0,0 st
%Cpu1 : 70,2 us, 0,3 sy, 0,0 ni, 24,8 id, 4,6 wa, 0,0 hi, 0,0 si, 0,0 st
%Cpu2 : 3,0 us, 0,7 sy, 0,0 ni, 84,6 id, 11,7 wa, 0,0 hi, 0,0 si, 0,0 st
%Cpu3 : 6,9 us, 0,7 sy, 0,0 ni, 78,2 id, 14,2 wa, 0,0 hi, 0,0 si, 0,0 st
%Cpu4 : 3,3 us, 0,7 sy, 0,0 ni, 84,3 id, 11,7 wa, 0,0 hi, 0,0 si, 0,0 st
%Cpu5 : 4,0 us, 0,7 sy, 0,0 ni, 90,1 id, 5,3 wa, 0,0 hi, 0,0 si, 0,0 st
KiB Mem: 32985292 total, 25834636 used, 7150656 free, 38312 buffers
KiB Swap: 58592252 total, 1767420 used, 56824832 free. 37988 cached Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
7615 asterisk 20 0 3147628 2,813g 1820 S 69,8 8,9 5:35.84 php
2389 asterisk 20 0 20,150g 1,207g 2176 S 28,5 3,8 247:42.19 asterisk
976 mysql 20 0 1411844 19392 2624 S 1,3 0,1 15:13.28 mysqld
21651 root 20 0 24876 2824 2316 R 0,7 0,0 0:02.08 top
...